Boeing and seaming tool



Feb. 27, 1923.

P. B. CANFIELD.

BORING AND REAMING TOOL.

FILED FEB. I4, 1921.

Patented Feb. v27, 1923,

PATENT OFFICE.

PHILEMON B. CANFIELD, v01? SYRA'CUSE, NEW YORK.

BORING AND REAMING TOOL.

Application filed February 14, 1921. Serial No. 444,918.

To all i12/tom it may concern:

Be it known that I, PHiLnMoN Bv. CAN- riELD, a citizen ofthe United States, residing at Syracuse, inthe county of Onondaga and State vof New York,-have invented certain new and useful Improvements in Boring and Reaming Tools; and I do hereby declare the 'following to be a full, clear, and-exact description of the invention, such as will enable others skilled in theart to which it appertains to make and-use the same.

This inventionrelates to improvements in boring and reainingiiiistruments, and has for its primary object the increase oftlie facility of operation of such instruments.

A more detail object ,is the provision of an apparatus capable of use in cylinders wliilein positions ordinarily considered iii-- accessible, and a further'object is 4the construction vof the instrument in suoli formas to enable its use to insure the truing up-of cylinders to a glass smoothness without limitation as to the v sizeof-tliecylinder; v

A still Vfurther object is the provision of a tool of this character capable of operating on a cylinder only 4for the areas of travel of the'piston rings, so tliatworn 'sections of used cylinders vmay be rendered true without varying areas beyond such sections.

With these and further objects in viewas willin part hereinafter become apparent and in `part be stated, thefinvention comprises certain novelV constructions, combinations and arrangements of parts'as subsequentlyspecified and claimed. Y

In the accompanying drawings,- Figure 1 is a view in side elevation of an instrument embodying the features ofthe present invention. Y Y

' Figure 2 is abottom plan-view thereof, the inner surface of a surrounding cylinder beingindicated by the dotted line. l

Figure l3 is anenlarged, detail, vertical section through the swivel nutyand collar, a

dinaryor usual'operations the said 'end will be uppermost, while thev other parts will be proportionately lower, it being understood, ofcourse, that inversion4 or other alteration in the position of theinstrument is not tol detract from the application of thereference to the said end as upper and the opposite end as lower as hereinafter mentioned.

At the lower end portion, and also at a pointfspaced above the lower end portion, the spindle shaft l is pro-vided withl enlargements-13, 3, eachfinished to form four'flat.

faces 4, `4, forming the major portionof wiiat, in cross section, would be a perfect rectangle if Vlthe lines of the faces werev continued tov meeting edges. In the construction of the enlargements 3, liowever,it is unnecessary that enough materialbe usedv to-` so extend the faces 4 whose functions will hereinafter become apparent. -A set of links .Y

or arms 5, -5, is provided foreach enlargement 3, one arm being provided foreach face 4, and the inner end vof each arm is pivotally Vconnected tov theVV respective enlargement 3 by a retaining tapfscrew' or bolt 6.v The head of each bolt 6 is ofs'uili'- cient size to form a bearing at lone face of each arm. or link 5, and. the respective facev 4 forms a bearing at lthe other face of the link so that the link, wliile'free to swing pivotally on `the respective bolt 6, is heldv against any lateral play. The arm :or link' 5 lof anyigiven face 4 lhas a corresponding co-'operating link 5A engaging Althe case 4` aboveor below, asv the case vmay be, and

pair. VTo the outery ends of each pair of links 5 is connected a cutterbar `7, the'c'onnection being pivotal and the pivot being sufficiently snugly fit 'as to prevent any looseness between the respective cutter bar and its carrying links 5. As shown, each ofthe said 'pivots consists simply of -a bolt to each other and with respect to the shaft by movementof the links 5 in the manner indicated by the `dotted line position lseen .these two links may be referred to-as a in Figure 1. To eii'ect` this movement when desired, and to hold the cutter bars ingiven positions, to cach cutter bar is pivoted a d e-shaf't link 9, which extends. upwardly and in- Wardly toward the spindle shaftl, and art its upper end is pivotally connected to an ear extending from a bracket 11 outstanding from an annulus` or swivel plate 12, there being a number otbrackets 11 equal to the number oi cutter bars 7. The

Vai-'mulus ori swivel plate 12Yis mountedl in an annul'arg'roove inthe Vswivel nut 13, which: nutis threaded to the threaded section 14f of the' spindle shaft 1, the saidthreaded. section 14 beitrag;` appropriately ,lo cated for enabling desired collapsing and expanding. movements ot the cutter bars 7 b tlieshiftin ,of the nut `13 alongthe spin yhile"themanner of introductionA ofthe nnurlrus or swivel plate 12 into the-groove `ot 'nut.13 has noty been indicated one the.tlixaaviligig,v it W'ill `be readily under'- Astood lbythosefskilled in the art that this may fbe accomplished by theV swaging o'lV thematerial ot` the' lower portion of the nut 13 outward to form the sWiveLplate-4 receivingV groove after the:` plate has been plliceddn; position, .or the parts may be otherwise assembled inl any well `known mamar fornel'ecting` the swivel connection between vp1`ate`12yand nut 13.

Itr'ivill thus Ibe'apparent that by thread'- in-.g the' nur'l` upward along spindle shaft 1,- .theglinksx 9 wi'llwbe" drawn upward and aefthe cutter' bars; Z are 'correspondingly .raised ItheyV Awillv be vmoved .outwarirl wit 1 an parallel-ruler movement until lthey out-` stamdlv :to .theextent required for the kparticular operation at hand." It; is furtherV to Vbeobserved that the fact that the Vcutterxbars 7 laire carried by' linksV in positionsoff Vcen- -ter with respect `to theaxis of movement oef thefinstlrumengt causes thel cutting edges `ofcuttdr bars 7, toc'ontact with the .sur-

desired cuttingposition, and then rotating thespindle ,1 by theapplication ofl an appropriate instrument to the squared end 2. Itjis thus' apparent that the instrument isappliccble te aygreat variety ofrsizes oficylin'ders,l and one-instrument may be made to` be-Lused with all sizes'of popular types of f automobile engine cylinders. Furthermore, with' this. instrumennitlis not necessary,vvhen @operating-fon scored or other.`

wise or worn. cylinders, to cut away any portion yor .portions not Within the area of' the travel' of the piston rings. The cap-acity of the instrument to collapse and to expand enables it to be applied in the exact location where the operationisito beperformed, and when that area representingl the full travel of the piston rings. has been rendered true and glass smooth, the instrucy tion may be collapsed and withdrawn Without kfurther operation. It will also be readily understood thatthe instrument may be introduced intothe cylinder of an engine Without removing Lth'e cylinder from the car or otherwise from itsbed.- i i vlt is to be noted that a sufficient tig-htenfins; of the bolts forming; the pivots for the several links 5 would' hold the cutter bars in operative'positionwithout Vthe uid of the links 9 and` their connections, especially Wherek changes in the adjustment were in! frequent, but manipulationiott the nut 123.l and Y parts actuated thereby enables quick andi easy adjustment and assures a x'ed and stable relationV o=f the cutterbars in any given adjusted position, and f greatly enhance the value of the instrument ior euseund accuracy of operation.

lhat is. claimed is'zi 1..The combination of a spindle shaft,l cutter bars pivotally carriedlthereby and spaced therefrom, the cutter bars being. mov-f able relative to the shaft .Whilemaintaining substantial parallelismwith. respect tothe axis of the shaft, and meansy for yretainingthe -cutter bars at any ot vvarious positions with respect tothe'shatt, thecutterbars bei-ng. carried ina position off-center, with respect to the axis of rotationof the shaft...

2. The combination of a spindlel '.shaft, j

links pivoted thereto to swing longi-tudi-i nally thereof off-center g withrespect Htothe plane of the axis of .the shatt, cutterbars carried by Seidl-inks and adjustable.there#A With` in planes spaced ,laterally of the' plane. of the axis otthe shaft and beyond the shaft and its connections, and mea-nsv Afor, securing;

vthe cutter bars in their vvariouspositions.:

3. Thecombination .of a spindle shaft, Y

links pivotedy thereto 'to swing; longitil'dinally thereofat one sideof the plane otk the axis of the shaft, cutter bars carried. by'

said links and Vmovable therewith "in planes spaced laterally fof theplane of the axis of the shaft, a nut threaded von thev shaiit,.;and means swivelled tofthe` nut and engaging ther cutter bars for'. retaining. the lutter-nvarious positions, the cutter 'bar sflying.be` youd the path of extended lines ofthenut. 4. The combination of a' spindleshaft, pairs of, links pivoted; to theshaft and .outstanding therefrom bQDd-.tlie path ofextended lines of the shaft and its connections, and .a cutter b ar pivoted to the outerlportions of each pairof links, thecutten being adjustable on. their linkato differentil positions i varying in distance :irom ,the shaft.

Y 1oL 5. The combination of a spindle shaft, bodily-movable, parallel cutter bars adjacent thereto, and links connecting the cutter bars to the shaft and pivoted to the 'shaft laterally of the axis of the shaft.

.6. The combination of'a spindle shaft, cutter bars adjacent thereto, and a pair of links for each cutter bar pivoted to the cuttei bar and swiveled to the shaft.

7. The combination of a spindle shaft, cutter bars adjacent thereto, a pair of links for each shaft pivoted to the cutter bar and sWiveled to tlie'cutterbar, and means for retaining the cutter loars in various posi-V tions.

8. The combination of a spindle shaft, cutter bars adjacent thereto, a pair of links for each cut-ter bar pivoted to the shaft and to the cutter bar, a Ynut threaded onto the shaft, and links pivotally engaging the cutter bars and having aV swivelled connection with the nut.

of the shaft, links pivoted to the shaft to swing` across said faces at the side of the axis of rotation of the shaft, and cutter bars carried by the links.

l0. A reamer comprising a spindle shaft having an enlargement provided with fiat faces spaced from the axis of rotation of the shaft, a link for each flat lface pivoted to the Shaft in position for swinging' across portions of the respective flat face at one side of said axis, and cutter bars carried by the links.

ll. A reainer comprising a spindle shaft having spaced enlargements, each formed with flat faces spaced from the axisof ro- -tation of the shaft, a linkage piroted to the shaft for each pair of fiat faces and comprising a pair of links, each adapted to swing across portions of its respective fiat face, and a cutter bar carried by each pair oflinks olf-center with respect to said axis.

In testimony whereof I affix my signature in presence of two Witnesses.

PHILEMON B. GANFIELD.

lVitnesses:

EDWARD lV. Canoe., HowAnn V. RAs'risoN. 

